Mining machine



1 644,345 Ogt. 4 1927. MCCULLOUGH v v MINING MACHINE nal Filed Dec. 29, 1922 5 she ts-sheet jibe/i3 1" WZZz'zmzT/V-(Mlogg Oct. 4, 1927.

w. T; MCCULLOUGH MINING MACHINE Original Filed Dec. 29, 1922 5 Sheets-Sheet 2 v 1,644 345" Oct. 4, 1927. W: MOCULFOUGH I I MINING MACHINE inal Filed Dec. 29, 1922 5 Sheets-Sheet 3 ms Z M Get. 4, 1927.

MINING MACHINE 5 Shets-Sheet 4 ori inal Filed Dec. 29, 1922 w M m R Nu mm V ww www iliii w w NW Mmw g W. T. MGCULLOUGH MINING MACHINE Original Filed Dec. 29, 1922 5 Sheets-Sheet 5 WILLIAM T. iucorrttouqnor onrcnoo, tunnels, nssrenon TOGOODMAN MANUF C 1 TUBING COMPANY, or o ircaeo, ILLIiIoIs, 'noonrone'rionor' ILLINOIS.

' ivrriiiriier MACHINE.

Original application .filedDeceinber 29, 1922, Serial No, 609,6-i7. Divided andthis application file d.

' October 29, 1923, Serial No. 871,286. Renewed May 2, 1927. p V 3 lhis invention relates to mining machines of the continuous cutter type, which are adapted to be fed and guided during the cutting operation by means of suitable draft cables anchored at a distance from the machine.

More specifically, the present invention relates to an improved form ofmining machine of the class shown and described in the application of Charles E. Davis, Serial No.

374,746, filed April 17th, 19:20, in which a miningmachine of the continuous cutter type is provided with two cable drums similarly constructedfand each adapted to be either driven by: the mining machine motor to wind'the draft cable on the drum or to pay out the cable from the drum in the opposite direction under control of the retarding device associated therewith.

The present invention is, a division of'iny application, Serial No. 609,613, filed December'29, 1922.

The object of the present i provide an improved, construction of cable drum for a machine. of the class above referred to and is a continuation in part of my application, Serial No. -34,591,'filed January3, 1921, combined with the description embodied in the application of Charles E. Davis, above'referred to, to which the improved form of cable drum has been applied. in theembodiment herein described, which illustrates one of several forms which my Qinventionmziy take, I have shown two rope drums, one of which is adapted to'begnorvided with a retarding means comprising a friction-controlled releasin device. How-.

ever, I find that certainadditional advan tages in the guiding and manipulation of the machine are obtained by a construction in which the normal functions of the two drums may be mutually reversed at certain times, particularly as the machine is approaching and leaving the normal cutting position. Accordingly, in the present invention, I provide means whereby the drum which is normally the tail-rope drum may be positively driven by the motor, while the other drum is simultaneously disconnected from the motor and allowed to be released-by an adjust-- able frictiondevice. I also provide variable speed mechanism ,afiording. operatlve con.-

nvention is to n-ection at will between the motorand either of the two drums. L 7

The main purpose in thus-reversing the functions of the rope drums istofacilitate the movement of the machine as it is being applied to, and Withdrawn from, the working face, and to eliminate certain replace. ments of the rope anchors which are neces sary with the ordinary type oflmachine,

thereby affording a more continuous move ment of the machine. A distinction .must therefore bev made between the temporary reversal of the'functions of the drums, for the purposestated above, and a complete reversal of the direction of cutting. The functions of the drums may betemporarily reversedwithout aflteoting any changein the normal direction of movement of the cutting PP Uatus. i

Furthermore, the present invention shouldbedistinguishedfrom that class of machines which also have driving connections with both feed and tail-rope drums, but in which -the drums are simultaneously driven in opposite directions so that the tail-rope is paid out at the same rate that the feed rope is wound in, for the purpose of maintaining a right-angled relation of the machine to the face during the cutting operation As will appear in the description of the operation of R Fries.

the present invention, the manipulation of the machine; while approaching andleaving the work usually requires respectiverates of movement ofthe two drums which'vary so greatly that a device in which the drums are driven simultaneously as above described would be useless and inoperative for the purposes-of the present invention.- p 1 Infeeding and guiding a miningmachine, one cable-drum is normally adapted to be driven in one directionfby suitable gearing connected with the mining machine motor,

to win-d up a draft cable thereon, whilea second drum, similarly constructed but disc0nlnected from the motor, is allowed to rotate n the d re i o parent e ta e herefrom undercontrol of the manually controlled retarding deyiee,vsuch as a friction .band- It has been found advisable however,

under certain conditions, to reverse thenormal functions of the two drumsi tl' at is to c 1 say, the normally driven drum is disconnected from the motor lay suitableclutchineans and allowed to rotate in the opposite direction toipay out-the cable under control of a retarding. device, while the opposite drum becomes motor driven. In other words,

' I contemplate that the mining machine is'to be'provided with two drums of the construc- V i tion shown and described in the present invention, each of which is provided'with a driving. mechanism and-a retard ng device. It will beseen, from the following description, that means are provided for automatidrum-when the latter is moved inthe; di-. rection opposite to that in which it is adapt- I ed to be'drivemand similarly, the retarding device is automatically disengaged'when the callyengagingthe retarding'device with the drum is driven in its normal direction by the motor. .vided whereby the driving and retarding en- Furthermore, means are progagements maybe reversed so as to be applied in the opposite directions, respectively; j that is to say, the drum may either be driven in a clockwise, and released in acounterclockwise direction, or vice versa, as desired.

f Means are also provided for allowing the drum to be turned by hand in either direc tion. I

1 Other objects of theinvention will appear from time to time as the description proceeds.

V The invention consists in thecombination, construction .and arrangement of .the'parts as willfhereinafter be described in connection withthe accompanying drawings andwmore Figure 1.

particularly defined in the appended claims;

. In'the drawings: 7

Figure 1 is a plan'view of themachine in normal cutting position.

. Figure 2is a rear elevatlon, of the driving mechanism, drawn'to a larger scale than Figure Figure l'is an enlarged plan view of the mechanism shown in F1gure3, showing some 7 I a of the details in section.

. Figure 5 is an end view of the cable drum. Figure 6 is a section of the drum taken on line'66 of Figure 5,

if Figure-7 is a section of the drum taken on line of Figure 5.

- 1 Figure S is a section of the drum taken on line 8-8 of Figure 7 i 7 Figure 9 is a detail.

My invention is shown as applied to-a mining machinehaving a' main frame A, and a I 3 is a right side"elevation of the drivmg mechanism drawn to the same scale '.&S--Fl gl.1182.

control ropes during the normal cutting operation across the working face. A rope 2 is adapted to be wound on a drum3, mounted on the left side of'the machine frame A. Said rope-passes from said drum over a pulley ladjacent the front end of the machine frame, and thence to a suitable anchor 5,

fixed at a distance from the machine, and near'the working face along which the ma:

chine is to-be moved. A second rope6 is anchored at the opposite end of the working face, and is led over suitably arranged pulleys 7 and 8, at the rear end'of the machine 1 frame, to a second drum 9, on the right side of the machine. The arrangement is such that in the normal cutting position illustrated in this figure, the rope drum 2 is ccnnected' t'hru diverting mechanism, to be hereinafter described, to the motor B. The opposite drum 9 is" disconnected from thedriving mechanism, and during the'normal cut across the face, is relcased at a rate substantially the same as the rate of take-up on the rope 2, by means of an adjustable friction band device 10 on the drum 9. The purpose of the rope ,6 is torestrain the movement of the rear end of the machine, and'maintain the proper angular relation of the cutter bar, to the working face. Referring now more particularly to details of the mining machine shown, means are provided for reversingthenormal func-- tions of the two drums above described, whereby the drum 9 may have a driving connection with the motor, and the other drum 7 3 may be released thru a friction device 11 similar to the friction device 10ab0ve described. The functions'of the two drums being therefore mutually reversible, I find, it preferable to make the drums identical in construction. i

The main elementsof the 'nism for drums'3 and 9 comprise a longidriving mechatudinal shaft 12 geared to the motor 3, a

worm gear-13 actuated by said longitudinal variable speed mechanism, and provided with interlocking clutches 16 and 17 on opposite ends thereof. The driving" connection be shaft, a; va'riable speed mechanism 14, and 5 i an endwise movable shaft 15 driven by said' tween clutch 16 and the drum 3 comprises a shaft 18, driving pinion 19 and gear ring 20 on said drum; The driving connection between clutch 17 andthedrum 9 comprises a pinion 21, idler gear 22, and a gear ring 23 on thelatterdrum. The purpose ofthe idler gear22-1s to 'drlvesaid drum in a direction V opposite to that of the ctherdrum The variable speedmechanisml l:is prefer-' Lablyof the planetary type, provided with an external friction band 14", anda friction adjustinglhandle 14", for the purpose of transmitting variable speeds to" the shaft 15. Details of this mechanismneed not 'bedescribe'd excepting to indicate a. clutch member 24 feathered on ins ant-15 and provided with clutch jaws-- L5, adapted to be engaged eitherwith a high speed member 2'6, or low The clutch 16" on the left end of said shaftcomprises an annular-flange on said shaft,

provided with clutch jaws 31, 31, adapted to engage with corresponding clutch jaws 32, 32

on; the connecting. shaft 18 extendin to the left hand drum The shaft -15is also provided with arecess 33' in which a reduced portion 34 of the connecting shaft 18 extends, for the? purpose of maintaining the two shafts in alignment with each other.

The clutch 17 for connecting the shaft 15 to the right hand drum 9Iis located: adjacent the interior face of theflpinion 21-011 the right hand sideof the machine. Said clutch comprises a sle'eve'35 fiXed to the shaft 15 and extending thru the pinion 21 to form an axial bearing therewith. Clutch j aws 36,

36 are carried by said sleeve, and are adapted to engage corresponding clutch jaws 37, 37,

' preferably formedin'tegral with the pinion 21.-v Means for shiftingv the shaft. 15 comprises ashifter yoke 38 mounted on. the sleeve provided" with a shifter arm 38 which "is operated by a suitable control handle 39;: see Figure 2) In the position shown in Figures 2, 3- and 4:, the shaft 15 is neutralposition", that is to" say, clutches 1-6 and 17 are both disengaged. It will be seen that if the control. handle 39 is moved downwardly, the shaft 15' will be moved longitudinally as to engage the clutch-16 to forma driving connectionwith the rope drum 3; On the other hand, if the, control handle is moved: upwardly, the shaft will be moved in the opposite-direction, clutch 16 will be disengaged and the opposite clutch 17 will become; engage-d to forma driving con nection with drum 9 j I V The rope drums 3 and 9, as hereinbefore pointed out, are preferably identical in construction, so that detailed description of oneoftlie drums;- will apply to both.

Referring now more particularly to the novel features of my invention, the "drum 3 comprises a hub 40 2? web 41, a channel portion 42' extending. in one .directihni to=receive the cable; and ring 43 extending in the opposite-direction from the web as shown. Thehuh this mounted on aejsuitatble bearing pin 44: carried by a stud 45' on the machine.

j provided to i enclose'the inner end o'f' the' drum.

an and late 43' is flhe' driving" gear ringflt) 1s loosely nro'ur-ited on the rim 1 3" of the drum andh asa plurality of notches 4 7,47, space'd aboutf the interior surface thereof. In the device illust1ated', the driving gear ring is provided with fou'rof such notches; pawl 48' mounted on a rocking" pin 50, and each end of said pawl is adapted tonextendthr'ough suitable apertures- 51, 51 in the flanged riin 43 to engage; with the npt'c'hed surface of the gear-1 ring 520. The ro'ki'ng pin bears at one end ina support 52 projecting frointh-e rim 43' and extends through the Web 41 of the v drum.

so A cainm'embcr 53 is affixed to the outer end ofe pin 50; adjacent tlie outer I face of the web s'l as shown in Figure 7.

Said cammen'iber is'pr'ovided with an clon gated face extending longitudinally"of-"the in d e-tailinFigurejS). j I v The friction device 10 is mounted 'adja c'ent the gear-ring 20' on the rim 3and comprises a 'fri-cti'on ring 54; and a friction band 56 of any suitable pattern adapted to be manually controlled 'in any "well known i'na'nnerg The friction ringbf 'isloosely I mounted on the f langed'rim' 43' and is "pro. vided with a ratc'h'et and pawl'device similar pawl 48 witl'i which it is "associ'atetlia s shown 7 to tl'iat her'einbefore described in connection I with thfge'at ring 20. Said ratchet and pawl device comprises notches 5 7, 57 onthe friction ring, pawl 58,roching pin 59, and 7 cam member 60. The two setsof pawls and cams are preferably" arranged on opposite sides of the hub as shown.

Means for controlling the movement of the pawls comprises; an annular ring 61 mounted on the outer endjofthf e drum hub 4 0 and carrying a pair of tension members 62, 62, adapted t-oengage the cams 53'i and 60 respectively, as shown in FigureBZ Said tension members each comprise an endwisef movablep1n 63 seated in a socket64 formed the peripheryfof the ring are a having a compression spring 64 mounted within I said socket tending to' force said: pin outwardly to en age: its respective pawl,- as shown in Figure 9; The r'lngfil is'provided with a plurality of fingers 65,1;65 spaced about its periphery so positioned in the re ces'sed face. of they drum as 'to be easily reached by the operator whe 'i' it is desired to shift. the tension dvi'ces 62,62 in "relation to the' cam members, and re'versethe' pawls.

It will beiobserved that" the pawl 58 isnormally inclined tothe friction ring 54 in the same direction .as tha-t of t lji'ejdriving pawl driven by suitable op-ei ativ'e 'c'onnections in as to drive the drum therewith. Similarly,

a clockwise direction, and the pawn4813a comesrengjaged in one offthre notches-4750 1130 tends transversely of the axis of the drum j the pawl 58 becomes released so that the drum may be driven independently of the friction device. 'When'the driving connection tothe motor is disconnected, the drum free to move in the opposite or counter- ,clockwisedirection until the pawl .58 engages With a notch 57'i11the friction ring 54.. The

' rope onxthe drum can then be paidofli only againstthe friction'imposed by the band 55, Q

whichfriction may be regulated in any suit able manner, as before described. If power I is again applied to the gear ring320 it will again move in a clfibkwise direction until pawl- 48 engages a notch 47 as before, to

' form an operative connection between said gear ring and the drum. It will thus be seen that the drum mayalternately be driven in onedirectionior released .against'friction 'in thelfopposite direction.

Whenevenit is deslredlto reverse the di- .f I .recftiofn of driving. the drum, either to reverse the direction of movement of the mining machine, j or, for any other purpose, the pawls 48 and -58fmay belrocked about their ages bymanipiilation of the ring'61, (see Figdriving mechanism, 1 when des1red.

v ure 5), so as to transpose the. tension de- Jvices 62, '62 from one end of the cams 53 and 60 over their respectlve centers, and to; the opposite ends thereof. Thls movepa'wls to' "positeendsinto operative engagement wlth ment of, thetension devices will cause the be rocked so as to bring their op the driving ring and friction ring respectively.

By means of this arrangement, the

operator may reverse both pawls'sim'ultane I I 'Qously. jAnysuitable means for limiting the movement of the ring, 61 respective to the H drum maybe provided.-

I also' provide means whereby the drum maybe rotated by hand, independent of the i This means comprises a bracket 66 rotatably fmounted on the end of the bearing pin 44: l and'having ashoulder 67 thereof adapted to ge'and' retain the outer face of the conenga "trolring .61. nut ,66 retains said bracket "011'- the pin44, Said bracket isprovidedwith a pair of laterally extending arms 68, 68 be- ;tween which-a ratchet arm 69 isplvotally mountedon' a pin 7 Said ratchet arm exand preferably is positioned within the boundary offlthe recessedface thereof, as

' shown in'Figure 6. Means are provided for maintaining said arm in this position which comprisesa rod '71 extending longitud nally through the bearing in 44 and a suitable slot 7 2 in saidarrn. .The rod 71 is provided arm,;andagcompression spring 74 at the opposite'end adapted to engage a shoulder at one. end witha retaining member 73 adapted to engage the outer Ifaceof said i 75 within the pin 44st as to normally maintainratchet arm69intheposition shown in linesin Figure6. Whenever it is de engagement in either direction.

sired to operate the ratchet arm, it may bev swung outwardly to a position indicated in dotted lines in Figure 6 in which position a lug 76 at the outer end thereof may be en gaged with-any one of the lugs 77, 77, ar-

ranged about the outer face of the drum portion 42, (see Figure 5). A crow-bar or other suitable device maybe inserted in' a socket 78 formed in the outer end of'the ratchet arm to provide a greater leverage for rotating the drum in this manner.

From the above description, it will be clear that I have provided a simple and durable construction ofcable drum in which the pawl mechanism 1s entirely enclosed and protected from the dust, dirt'and other for:

eign accumulations. The adjusting mechanismfor the pawls and'the ratchet mechanism for turning the drum by hand are both nested in the recessed face of the drum, but

' in iew of, and easily accessible to the operator. When it s desired to reverse or actuate the pawls, one of the fingers 65, 65 will always be in positionwhere it may be easily reached torotate the control ring, 61 associated with the tension devices 62, 62. If 1i, is desired to temporarily disengage the pawls, the tension device 62 may be moved 1 into alignment with the axes of said pawls,

that is to say, tothe center of the cams 53g and 60 so as to maintain the pawlsout-of The pawls are interlocked so as to be operable simultaneously, and are thus maintained simultaneously moved into an inoperative I position, to allowthe drum to be rotated freely in either direction. Furthermore, in

case it is desired'to reverse the direction of cuttmg' of the entire machine, together with the cutter chain, to cut in'the opposite direction, the pawls may be reversed by a sin-' gle movementof the ring 61.

Although I have shown and described one form in which my invention may be I embodied, it will be understood that many other means may be'employed' for accomplishing thesame results, without departing from the.

spirit and scope of my invention. I do nottherefore wishtobe understood as limiting myself to the specific construction illustrated herein excepting as specifically limited in the appended claims.

I claim as my invention? 1. In a device of the'class described, in combmation wlth a rotatable member, a gear and a frictionally controlled ring both Y mounted loosely on said rotatable-member and each having pawls adapted to engage said gear and said ring respectively, cams associated with said pawls and a control member mounted on said rotatable member having a pair of tension devices each adapted to engage one of said cams, and movable into a plurality of positions for rocking the pawls in opposite directions.

2. In a device of the class described, in'

said ring respectively, cams carried by said pins on the opposite side of said Web, 'a control member rotatably mounted on the drum,-

and a pair of tension devices on said control member, each adapted to engage one of said cams. H c

3. In a device of the class described, in

' combination with a drum comprising a hub,

a centrally disposed web, and annular flanges extending in opposite dlrectlons therefrom,

a gear and a frictionally controlled ring both rotatably mounted on one of said flanges, two rocking pins extending through said drum Web, pawls mounted on each of said pins and adapted to engage said gear and said ring respectively, cams carried by said pins on the opposite side of the Web,

a control member rotatably mounted on the drum, a pair of tension devices on'said control member, each adapted to engage one of said cams, and a ratchet device mounted concentrically with the end of the drum hub and.

within [the boundary of the drum flange,

said ratchet device comprising an arm adapted to sw ng outwardly beyond said drum flange, and means carried by said flange tor coacting with said arm.

4. In adevice of the class described, in"

combination with a cable drum having a hub and an annular flanged periphery forming a recess, a ratchet devlce mounted wlt-hln said recess, comprising a bracket mountedf concentrically with said hub, an arm mounted transverse to the axis of said drum and;

pivotally connected to said bracket, said;arm having one end thereof adapted to swing outwardly beyond the flange of said drum,

tension means adapted to maintain said arm normally within the recessed face of said drum, and a plurality of lugs spaced about the periphery ofsaid flange adapted to be engaged by said arm when the latter is swung outwardly.

5. In a'machineof the class described, the

combination of a'driving means, a drum associated with a flexible drattdevice, a gear 1 loosely mounted on said drum and" adapted to have operat ve connection withsald drivingmeans, a reversible ratchet and pawl device associated with said drum and gear whereby said drum may be driven ineither direction, a frictionally controlled member also loosely'mounted on saiddrurn, asecond reversible ratchet and pawl device associated with said drum' whereby the latter is automatically connected with said frictionally cont-rolled member when said drum is rotated in'one or the other direction, and means for interlocking said reversible pawl devices.

; Signed at Chicago, in the'county of Cook and State of Illinois, this 20th day of Oc'tov ber, 1923. r I WILLIAM T. MCGULLOUGH. 

